halon的知识精选

“halon”可以造什么句,halon造句
cleanagenthalonreplacementhalongasextinguishingsystemdibromotetrafluoroethane[halon2402][C2F4Br2]bromochlorodifluoromethane[halon1211][CF2BrCl]bromochlorodifluoromethane[BCF][halon1211]spaceprotectedb...
热门标签